Who we are
The developer and publisher is WW4U tec., releasing games under the NULLGames brand. This policy applies to all of our Google Play apps listed below and to this website. It also covers apps added later, unless a separate policy is linked from their store listing.
Questions: support@nullgames.kz.
Apps
| App | Package ID | Services | Age |
|---|---|---|---|
| Electro Master | com.nullgames.electromaster | Google AdMob | All ages; ads only 13+ |
| Armor Buster | com.nullgames.armorbuster | Google AdMob | 13+ |
| Scrap Tower | com.nullgames.scraptower | Google AdMob, Google Play Games | 13+ |
Data we receive
None. Our apps have no accounts of our own, sign-up, contact forms or servers. Some games offer optional Google Play Games features, which are provided by Google (see below). We do not collect your name, email, phone number, contacts, photos, precise location or payment details. We use no analytics or third-party trackers of our own.
Data stored on your device
To make the game work, the following is stored locally on your device, inside the app:
- game progress, completed levels and achievements;
- circuits, shots and other projects you create;
- settings such as language and sound;
- in Electro Master, your date of birth, if you enter it. It is used for age-appropriate settings (including whether ads are shown) and a birthday greeting.
This data is never sent to us or to third parties and is excluded from Android cloud backup. You can delete it by clearing the app's data in Android settings or by uninstalling the app.
File import and export
Some games let you save a project to a file or open one. This uses the Android system file picker and “Save as” dialog, so the app can access only the file you choose. When you share a file, it goes only to the app you pick. We do not request access to your device storage.
Advertising (Google AdMob)
Free versions of our games show ads through Google AdMob, provided by Google LLC (Google Ireland Limited in the EEA and UK). Ads may be interstitial (between levels), banner, or rewarded: a rewarded ad is shown only when you choose to watch it for an in-game bonus.
- Electro Master asks for a date of birth. The ads SDK starts only if the user has indicated an age of 13 or older; users under 13 see no ads, and no data is sent to AdMob.
- Armor Buster and Scrap Tower are intended for users aged 13 and older and do not ask for age.
When ads are enabled, Google may automatically collect:
- the Android Advertising ID;
- IP address and the approximate location derived from it;
- device and system information: model, Android version, language and carrier;
- ad impression and click data, plus diagnostics.
Google uses this data to serve and measure ads, prevent fraud and, where you have consented, personalise ads. Ad content is limited to the general audience (G) rating in Electro Master, to at most the parental guidance (PG) rating in Scrap Tower, and to at most the teen (T) rating in Armor Buster. Learn more: How Google uses information from partner apps and the Google Privacy Policy.
Google Play Games
Scrap Tower uses Google Play Games Services for achievements and a leaderboard. If you have a Play Games profile, the game signs in to it automatically at launch; you can also play without signing in.
- The game receives your Play Games player ID and nickname. They are used only inside the game, to show that you are signed in and to highlight your result, and are never sent to us.
- Unlocked achievements and your best score are stored by Google. Your score appears in the public leaderboard under your Play Games nickname and can be seen by other players.
This data is processed by Google under the Google Privacy Policy. You can change your profile visibility, sign out or delete your Play Games profile and its data in the Google Play Games app settings or in your Google Account.
Consent and choices
- Users in the EEA, UK and Switzerland see a Google consent form on first launch and can change their choice at any time with the “Privacy settings” button in the game (in Armor Buster it is in the “About” window, in Scrap Tower in the menu).
- On any device you can opt out of personalised ads or delete your Advertising ID in Android Settings → Google → Ads (the exact path varies by device).
- To stop ads entirely, uninstall the app. In Electro Master you can also set an age under 13.
App permissions
Our apps request only internet and network-state access (to load ads) and the Advertising ID permission (AD_ID). We do not request access to the camera, microphone, contacts, location or device storage.
Sharing and sale of data
We do not sell or share user data. The only third-party services that may receive data from your device are Google AdMob and, in games that use it, Google Play Games, as described above.
Children
Our apps are not primarily directed at children under 13. Electro Master is suitable for a general audience: on first launch it asks for a date of birth, and if the user is under 13, the ads SDK is not started and no data is transmitted. Armor Buster and Scrap Tower are intended for users aged 13 and older. We do not knowingly collect personal information from children. If you believe a child's data has been transmitted, contact us and we will help.
Retention, deletion and security
We hold no user data, so there is nothing for us to retain or delete. Local data stays on your device until you remove it (see above). Data collected by Google is retained under Google's policies and can be managed in your Google Account. App data is protected by Android's app sandbox, and network connections use HTTPS only.
Your rights
Depending on where you live (for example, under the GDPR or US state privacy laws), you may have the right to access, correct or delete your data and to withdraw consent. Contact us and we will reply within 30 days. Rights over advertising data are exercised through the Google tools listed above.
Website
This website uses no cookies, analytics or forms. The hosting provider may process standard technical logs (IP address, request time, browser type) to deliver pages and protect the service.
Changes and contact
We will update this policy when we add new features (such as purchases, analytics or cloud saves) or new apps. The revision date is shown below and in the page header.
Privacy contact: WW4U tec., support@nullgames.kz.
Effective date: 4 October 2026.